A short design method for nonuniformly spaced antenna arrays

Abstract

A design method is presented for symmetrical nonuniformly spaced linear arrays. Element positions are easily found if one element position is given. Instead of restricting the cosine functions in the array factor, a constraint is placed upon the arguments of the cosine functions. For an array of 2N elements, one obtains N - 1 equations in N unknowns, which can be solved sequentially instead of simultaneously. The array designs are not optimum, but the simplicity of this method will allow arrays to be designed quickly. These arrays could inturn be used as preliminary steps toward more rigorous studies.